Time-controlled valve-operating means



April 21, 1925-. 1,534,985

E. S. MARSH TIME CONTROLLED VALVE OPERATING MEANS Filed July 12, 1920 2Sheets-Sheet 1 ATTORNEY 1,534,985 E. s. MARSH man CONTROLLED VALVEOPERATI-NG Isms Filed July 12, 1920 2 Sheets-Sheet a .41 I ag-19k I 9/37 ATTORNEY valve in different positions;

Figure 4t is'a sect on on'the line 4 4f of Patented Apr. 21, 1925.

u NIT ED "STATES lfili ifitti PATENT err-ice,

EDWARD s. MARSH, or noonnsrnn, new YURK, nssrenoa 'ro rAYLQB IHS'IRUMENTooMrnrIIEs, OF noonnsrnannwvonn, A oonrona'rron or new YORK.

'TIME-CQNTROLLED VALVE-QIERATING MEANS.

Application filed July :12, 1920. ,Serial No. 395,619.

To (6U #10]! out it may concern.

, 15c ;it known that I, ED ARD S. Maus r, a citizen of the UnitedStates, residing at Rochester, in the county of Monroe and State ofNew'Yorlnfhavc ,invented certain new and useful Improvements inTime-Controlled Valve-Operating Means; and 1 do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the accompanying drawings, forming a part of thespecification, and to the reference numerals marked thereon. I

This invention relates to time controlled valve operating means, such asare C0111- monly employed for vulcanizers and other processingcontainers and, more particu larly, to means of this character employingfluid pressure as a motive force for opening or closing main operat ngvalves at the end of a predetermined period of time.-

The chief object .of the invention is to provide an improved .device ofthis kind which is convenient, reliable and accurate in operation,simple and compact in construc tion and economical to manufacture. Tothese and. other ends the invention resides in certain improvements andcombinations of parts, all as will be hereinafter more fully described,the novel features being pointed out in the claims at the end of thespecification.

In the drawings:

Figure 1 is an elevation of the main parts of a valve operating meansembodying the present invention, enclosed in a casing;

Figures 2 and 8 are enlarged elevations pressure showing the secondaryor fluid apparatus as a whole.

Similar reference characters throughout the several views indicate thesame parts.

The embodiment of the invention herein shown and described is selectedmerely by way of illustration of the principle and application thereofand is capable of various is a section on line of modifications andother uses. The present embodiment is disclosed as applied to thepurpose of controlling a fluid container 10, Figure 8, ,suoh ,asiscommonly employed in various processes for subjecting material to betreated to the action, for example, of a heating medium such assteamwhich is sup-- plied to thecontainerthrough a pipe line 11 controlled bya valve 12 of the well known diaphragm type operated by the fluidpressure actuating means 13 and the spring shown. In the present case,for a purpose which will presently appear, the actuating means 13 ispreferably of'the double diaphragm variety known in the art and capableof operation by fluid pressure regulating means with which pipe 14: isconnected for regulating the temperature or pressure within thecontainer, and also by the mecha nism embodying the present inventionwhich is connected with the valve by the pipe line 15. Container hasconnected therewith also a discharge or blow-off line 16 for emptyingthe same of the heating medium, water of condensation and the like,controlled by a valve 17 having the usual fiuid pressure actuating means18 and the spring shown in the drawings. Actuating means 18 is suppliedwith fluid under pressure through a pipe line 19 with which the line isconnected and it will be understood that valve 12 is of the so-calleddirect acting type which is closed by the application of fluid pressure,while valve 17 is of the reverse acting type which is opened by theapplication of fluid pressure, so that when pressure is admitted to theline 19 it closes valve 12 to out off the supply of steam or otherheating medium, and opens valve 17 to exhaust the same from thecontainer thereby quickly terminating the process at the time desired.

The time controlled operating means for thcmain valves 12 and 17 isenclosed within the casing 20 with which the fluid pressure line 19connects and also the line 21 from a suitable source of pressure. Amoisture trap 22 and also a pressure gauge 23 may be inserted in thelatter line if desired.

The secondary or fluid pressure valve govcrning the supply of pressurefrom line 21 to line 19 comprises preferably a housing 24 secured as bymeans of screws 25, Figure 1, to the back of casing 20. The housing hasforn'ied therein, Figure l, asubstantially cylindrical valve chamber 26,opening into the housing from the back of the latter and there closed bya plug 27 threadedly engaging the end of the chamber. Closely andretatably fitted within the latter is the valve body 28 in the shape ofa disk having a stem 29 guiding the valve and rotatably carried in abore opening through the front of the housing 24. The stem projectsthrough the front of the latter and has a reduced angular portion 30 towhich the valve actuating means is secured. The valve disk has anopening or port 31 from front to back therethrough and also an elongatedport or depression 32 in its forward surface. Communicating with thevalve chamber back of the disk is an opening 33 with which is connecteda pipe 34 carried around the side of the casing 20', Figure 1, andconnected with a union 35 supported in a bracket 36 on the casing and tothis union is connected the pressure supply line 21. The valve chamberand the port 31 of the valve disk are thus subjected at all times to thefluid pressure.

The forward part of the housing 24, opposite the valve stem 29,preferably has formed therein an angular opening or passageway 37 whichturns rcarwardly and opens through the forward wall of the valve chamberin position to register with the slot or port 32 in the forward side ofthe valve disk in certain positions of the latter. Connected with theopening 37 is a pipe 38 carried around theside of the casing andconnected with a union 39 supported in a bracket 40 thereon, the union39 having connected therewith the line 19 leading to the main valve.Spaced from the opening or passageway 37 is a similar passageway 41opening into the valve chamber on the forward side of the valve disk inposition also to register with the slot or port 32, and connected withthis passageway is a pipe 42 which opens to the atmosphere. At 43 is aspring plate bearing against the valve housing and a part on the valvestem to hold the valve disk tightly against the forward wall of itschamber. Referring to Figures 2 and 3 where'these various ports andopenings are shown in dotted lines, it is seen that, in the rotaryposition of the valve disk I shown in Figure 2, opening 37, andtherefore the main valve supply line 19, is connected by means of theslot or poi-i132 with thevent passageway 41, so that in this positionthe pressure is removed from the main valve 12 and the latter is open tosupply steam to the container while discharge valve 17 is closed. In theposition of the valve disk shown in Figure 3, however, slot or port- 32is out of register with opening 37 and port 31 registers with the latterso that pressure is thus transmitted to the latter and to line 19,closing supply valve 12 and opening discharge valve 17 for terminatingthe process.

The means for ope ating the secondary or fluid pressure valve comprises,preferably, a frame 44 having an angular opening our bracing the angularportion 30 of the valve stem and fixed to the latter by means of a setscrew 45. Frame 44 has a forked or yoke portion 46 between the arms ofwhich is pivotally secured, as by means of a pin 47, a radiallyextending arm 48, which is normally yieldably maintained in such radialrelation, as shown by full lines in Figure'4, by means of a coil spring49 secured by a screw 50 on the frame 44 and having an angular endcooperating with a pin 51 on the arm. It is apparent however that theend of the spring is so shaped as to permit the arm to be moved to theinclined position shown in dotted lines, for a purpose presently to bedescribed, and the arm is yieldably held in such inclined position bythe spring until it is returned to the position shown in the full lines.The outer end of the arm is provided with a thin knife like edge 52 forclose cooperation with a time driven cam which will now be described,the end 52 being urged into engagement with the cam by a coil spring 52fixed at one end to the back of the casing and at its other to a shortarm 011 the frame 44.

A means is provided for maintaining arm 48 and the valve in theoperating position shown in Figure 2, with the steam supply valve 12open and the discharge valve 17 closed, until the predetermined timearrives for releasing the arm and valve to permit movement of the latterby its spring 52 to the position shown in Figure 3, thus terminating theprocess. This means coinprises, preferably, a substantially circular cam53, Figures 1 and 7, adjustably and removably fixed on a spindle54 bymeans of a thumb nut 55. As shown in the drawing, spindle 54 carriesalso a rotatably adjustable and removable cam 56 with which cooper atesan arm 56 of a mechanism for regulating the temperature in container 10during the process, as disclosed in my copending application for patentfor time-controlled regulating devices, such mechanism being adapted forconnection with valve 12 by the fluid pressure line 14. Spindle 54 hasfixed thereon also a gear 57 meshing with a gear 58 of any suitable timemecha nism or clock shown as enclosed within an inner casing 59 securedas by means of screws 59 on the back of casing 20 and having a suitablewinding stem 60. Nut 55, of course, serves to clamp the cams 53 and 56against gear 57 in fixed relation to the spindle after the cams havebeen rotarily adjusted to desired position thereon. Cam 53 has in themain a circular profile against which arm 48 bears so that movement ofthe latter is restrained until the rotation of the cam brings under thepoint of the arm the abrupt wall 61 of a depression in the cam whichallows the arm todrop into contact with an opposing inclined wall 62 ofthe depression, the function of which is to move the .arm about itspivot transversely of its direction of rotation or substantially in-theplane of the valve stem, so that the arm is quickly thrown out ofengagement with the cam and is swung toward the left by its spring 52 tothe position of Figure 3, for operating the valves in the mannerdescribed to terminate the process. By this means the arm is instantlyreleased from the cam and permitted to swing through a substantial anglefor operating its valve. In order to reset the arm on th ram, however,to repeat the operation, the arm may be conveniently turnedabout itspivot'far enough to clear the cam and swung toward the right andreengaged with the circular profile of the cam. Extreme movement of thearm is limited by the stop pins 63 shown in Figure 1. IVhen it isdesired to remove cams 53 and 56 from spindle 5% for the purpose ofsubstituting a difierent regulating cam 56, arm 4-8 may be swung to theposition shown in dotted lines in Figure 4 in which position it is outof the way of the cams while the e latter are being removed andreplaced.

Cam is conveniently provided with a zero mark, as shown, which isadjacent a time scale on the regulating cam 56 and is properly locatedwith reference to its operating shoulder 61 so that, with cam 56 in zeroposition as at the start of the process, the zero of cam 53 may herotated through a number of hours or fractions thereof as indicated bythe scale on cam 56, corresponding to the desired time period of theprocess, and the location of the zero point of cam 53 in this manneropposite the time on the scale at which it is desired to terminate theoperation automatically rotates the operating portion 61 of the cam to aposition such that at the termination of the desired period the arm 48will be released to terminate the process.

As apparent from the disclosure, the device is simple and compact inconstruct-ion, requiring comparatively few parts of practical design andlow cost of manufacture, and the various parts are so constructed andarranged as to afford a mecl'ianism which is convenient, reliable andaccurate in operation. 7

I claim as my invention:

1. In a regulating apparatus, the combination of a regulating element, apart connected with the element and movable to move the same, said parthaving also a second movement independent of movement of the element,means for effecting said first movement of said part, a cam. forengagement with said part to normally restrain said first movementhaving a portion formed to release said part for movement of the elementand also a portion inclined to the direction of movement of the cam toelfect said. second movement of said part to release said part from thecam, and a time mechanism for driving the cam.

2. In a regulating apparatus, the combination of a regulating element,an arm on the element to control movement thereof, said arm beingmovable with the element and having also a second movement independentof the element, means for effecting said first movement of the arm, aspindle, .a cam adjnstably carrical by the spindle for normallyrestraii'iing said first moven'lent of the arm having anabruptdepression for releasing said arm and adjacent thereto a portioninclined to the path of the cum to effect said second moven'ient of thearm to release the latter from the cam, and time mechanism for drivingsaid cam.

3. In a regulating apparatus, the combination of a rotary regulatingvalve, an arm connected for rotation with the valve and having also anidle pivotal movement transversely of said rotary movement, a spring forrotating said arm, an adjustable rotary cam having a peripheral surfacenormally restraining rotation of the arm with a radial depressiontherein for abruptly releasing said arm and also a surface extendingtransversely of said peripheral surface for effecting said idle movementof the arm to release the latter from the cam, and a time train fordriving the cam.

l. In a regulating apparatus, the co1nbination of a rotary regulatingvalve, an arm connected for rotation with the valve and having also anidle pivotal movement transversely of said rotary movement, a spring forrotating said arm, a rotary spindle, a cam adjustably carried by thespindle having a generally circular peripheral surface for engagementwith said arm with a substantially radial depression therein forreleasing said arm to normally restrain rotation of the arm and havingalso a surface inclined to the plane of rotation of the cam foreffecting said transverse movement of the arm to release the latter fromthe cam, and a time train for rotating said spindle.

5. In a regulating apparatus, the combination of a regulating valve, apart connected with the valve and movable to move the same, said parthaving also a second movement independent of movement of the valve,means for effecting said first move ment of said part, a rotary spindleprovided with a dial, a cam rotatably adjustable on the spindle andhaving an index cooperating with said dial, said cam being formed with aperipheral surface engaging said part to normally restrain movementthereof and also with an integral surface inclined to said peripheralsurface for efiecting said second movement of said part and releasingthe latter from the cam, and a time train for rotating said spindle.

6. In a regulating apparatus, the combination of a rotary regulatingvalve, an arm connected for rotation with the valve and having also anidle pivotal movement transversely of said rotary movement, a spring forrotating said arm, a rotary spindle, provided with a time dial, a camadjustably carried by the spindle having an index 00- operating withsaid dial for indicating the adjustment of the cam, said cam beingformed with a peripheral surface engageable with said arm to normallyrestrain rotation of the latter and also with a surface transverse tosaid peripheral surface to effect said idle movement of the arm torelease the latter from the cam, and a time train for rotating saidspindle.

7. In a regulating apparatus, the combination of a rotary regulatingstem, a radially extending arm on said stem rotatable therewith andhaving also a transverse pivotal. movement, spring means for rotatingsaid arm and stem, spring means for retaining said arm in extremepositions of trans a predetermined time and having also a portionadapted to effect said transverse movement thereof, and time mechanismfor rotating said cam. v r

8. In a regulating apparatus, the combination with a rotary valveprovided with a stem, a frame on said stem, a radially extending armpivotally mounted in said frame for movement substantially transverse toits rotation, spring means for rotating the arm and valve, and anadjustable rotary cam in the path of rotation of the arm provided with adepression having an abrupt leading Wall and an angularly turned rearWall adapted to move the arm transversely clear of the cam, a spring forurging the arm to cam engaging position, and time mechanism for rotatingsaid cam.

EDWARD s. MARSH,

